11. How is the graph of y - f (x - 7) + 5 transformed from the graph ofy - f (x) ? Shifted right 5 and shifted down 7. O Shifted right 7 and shifted down 5. O Shifted left 7 and shifted down 5. O Shifted left 7 and shifted up 5. Shifted right 7 and shifted up 5. 12. Find the average rate of change of f(x)=10x+7 from x=-1 to x-4. A.R.O.C.=10 A.R.O.C.=4 A.R.O.C.=16.67 A.R.O.C.=4.7 13. A sales team estimates that the number of new phones they will sell is a function of the price that they set. They estimate that if they set the price at T dollars, they will sell f () - 5200 - 8x phones. Therefore, the company's revenue is R(x) = x(5200 - 81) . Find the price Twhich will maximize the company's revenue. 225 None of the other choices is correct. 275 425 325